NPTE Study Tips: Mastering Open vs Closed Packed Positions for Success
· based on the channel Typical PT
Understanding Open Packed Position in NPTE Study Tips
Open packed position, also known as loose packed position, refers to the joint alignment where the joint surfaces are least congruent, allowing the greatest amount of joint play or accessory motion. This position is crucial for physical therapists to understand because it represents the posture where ligaments and capsule are most relaxed, making the joint more mobile but less stable. For example, in the knee, the open packed position is approximately 25 degrees of flexion. Recognizing this position on the NPTE musculoskeletal section helps you answer questions about joint mobilizations and injury mechanisms.

Video: NPTE Study Tips | Open vs Closed Packed Positions
Closed Packed Position Essentials for NPTE Preparation
Closed packed position is the exact opposite of open packed. It describes the alignment where joint surfaces have maximum contact and congruency, and ligaments and capsule are taut, providing maximal joint stability. In this position, accessory movements are minimal or absent. For instance, the knee is in a closed packed position during full extension. Understanding closed packed positions is vital for NPTE orthopedic questions that focus on joint stability, injury risk, and conservative or surgical interventions.
Key Differences Between Open and Closed Packed Positions
Distinguishing open packed vs closed packed positions quickly is a highly tested concept on the NPTE. Here are the main differences:
- Joint Congruency: Open packed = minimal congruency; closed packed = maximal congruency.
- Ligament Tension: Open packed = ligaments relaxed; closed packed = ligaments taut.
- Joint Play: Open packed = maximum accessory movement; closed packed = minimal or no accessory movement.
- Joint Stability: Open packed = less stable; closed packed = most stable.
Knowing these factors allows you to identify joint positions on exam questions and choose the correct answer regarding joint mechanics or treatment.
Applying Open vs Closed Packed Knowledge to NPTE Musculoskeletal Questions
Many NPTE musculoskeletal questions test your understanding of joint positions by asking about:
- Optimal positions for joint mobilization techniques (typically open packed).
- Positions that create or reduce stress on ligaments and joint capsules.
- Mechanisms of joint injuries related to position and stability.
- Differences in joint behavior during functional activities.
By linking theoretical knowledge to clinical scenarios, you can answer questions more confidently and accurately.
NPTE Test-Taking Strategies for Open and Closed Packed Position Questions
To maximize your NPTE score on these topics, consider these tips:
- Memorize common open and closed packed positions for major joints (knee, shoulder, ankle, hip).
- Look for keywords like “maximum joint play,” “ligament tension,” or “joint stability” in questions.
- Use elimination by associating open packed with mobility and closed packed with stability.
- Practice with NPTE-style questions focusing on musculoskeletal and orthopedic content.
Review resources such as Typical PT’s free study materials to reinforce these concepts.
Summary
Mastering open packed and closed packed positions is essential for the NPTE musculoskeletal section. Open packed position allows maximal joint play with ligaments relaxed, while closed packed position features maximal joint congruency and ligament tension for stability. Recognizing these positions improves your ability to answer orthopedic questions related to joint mechanics and treatment strategies. The Typical PT channel offers clear explanations and practical tips to strengthen your understanding and exam readiness. Use these NPTE study tips to boost your confidence and performance on test day.
Key takeaways
- Open packed position allows maximum joint play and minimal ligament tension.
- Closed packed position features maximal joint congruency and ligament tightness.
- Recognizing these positions helps answer NPTE musculoskeletal and orthopedic questions correctly.
- Open packed is also called loose packed position, important for joint mobilization.
- Closed packed position provides maximal joint stability and is used during joint locking.
Source: NPTE Study Tips | Open vs Closed Packed Positions · Markdown version
Questions & answers
What is the open packed position in physical therapy?
The open packed position is the alignment of a joint where the joint surfaces are least congruent, ligaments and capsule are relaxed, and there is maximal joint play or accessory motion. It is important for joint mobilization and injury assessment.
How does the closed packed position differ from the open packed position?
Closed packed position is when the joint surfaces have maximal congruency, ligaments and capsule are taut, providing maximal stability and minimal joint play. This contrasts with the open packed position, which is more mobile but less stable.
Why is understanding open vs closed packed positions important for the NPTE?
Recognizing these joint positions helps candidates correctly answer musculoskeletal and orthopedic questions on the NPTE by applying knowledge of joint mechanics, stability, and treatment techniques.
Can you give examples of open and closed packed positions for common joints?
Yes. For the knee, the open packed position is about 25 degrees of flexion, and the closed packed position is full extension. For the shoulder, the open packed position is about 55 degrees abduction and 30 degrees horizontal adduction, while the closed packed position is full abduction and external rotation.